基于51单片机的带坐姿检测语音提醒智能护眼台灯proteus仿真原理图PCB

功能介绍：
0.本系统采用STC89C52作为单片机
1.LCD1602液晶实时显示当前时间/灯光亮度/姿势检测
2.姿势不正确时，蜂鸣器报警，同时语音提醒
3.具备久坐提醒功能，到达提醒时间，蜂鸣器报警，同时语音提醒
4.有人时根据环境光强调整台灯亮度，人离开后，灯光调到最暗，当回到座位自动变亮，以节约用电
5.可通过按键更改当前时间
6.采用DC002作为电源接口可直接输入5V给整个系统供电

原理图：

PCB ：

主程序：

#define __MAIN_C
#include <reg52.h>
#include "main.h"#define ALARM_TIME 1 //定时提醒时间，最大59分钟bit dispFlag = 1;
bit setFlag = 0;
unsigned char setIndex = 0;
unsigned char lightValue;
char dispMode = NORMAL;
bit bodyFlag = 0;
bit postureRightFlag = 0;unsigned char lampAPWM = 1;
unsigned int time500us = 0;
unsigned char timeMinuteBuf = 0;
unsigned char timeSecondBuf = 0;unsigned char alarmDelay = 0;void main()
{//初始化UART_Init(); //初始化串口Timer0_Init(); //初始化定时器LCD_Init();DS1302_Init();DelayMs(20);//开机显示LCD_DispStr(0, 0, "    Welcome!    ");DelayS(2);LCD_Clear();DS1302_ReadTime();timeMinuteBuf = timeBufDec[5]; //重置计时timeSecondBuf = timeBufDec[6]; //重置计时while(1){// LCD1602液晶显示if (dispFlag == 1 && setFlag == 0){dispFlag = 0;DS1302_ReadTime();if (BODY_PIN == 0) //有人{bodyFlag = 1; //有人标志LampCtr();if (POSTURE_PIN == 0) //姿势正确{postureRightFlag = 1; //姿势正确标志}else{postureRightFlag = 0; //姿势不正确标志UART_SendStr("请注意坐姿\r\n", 12); //发送数据DelayS(3);}if (timeMinuteBuf >= (60 - ALARM_TIME)) //分钟大于(60 - ALARM_TIME)的处理{if (timeBufDec[5] == (timeMinuteBuf + ALARM_TIME - 60)) //ALARM_TIME分钟到{if (timeBufDec[6] == timeSecondBuf){alarmDelay = 10;               //蜂鸣器报警UART_SendStr("请注意休息\r\n", 12); //发送数据timeMinuteBuf = timeBufDec[5]; //重置计时timeSecondBuf = timeBufDec[6]; //重置计时}}}else{if (timeBufDec[5] == timeMinuteBuf + ALARM_TIME) //ALARM_TIME分钟到{if (timeBufDec[6] == timeSecondBuf){alarmDelay = 10;               //蜂鸣器报警UART_SendStr("请注意休息\r\n", 12); //发送数据timeMinuteBuf = timeBufDec[5]; //重置计时timeSecondBuf = timeBufDec[6]; //重置计时}}}}else{bodyFlag = 0; //没人lampAPWM = 1; //将台灯亮度调到最暗timeMinuteBuf = timeBufDec[5]; //重置计时timeSecondBuf = timeBufDec[6]; //重置计时}if (dispMode == NORMAL){DispNormal(setIndex);}Alarm();}KeyProcess();}
}void LampCtr()
{lightValue = 99 - 99 * ReadADC1(AIN0_GND) / 255; //读取当前光照强度if (lightValue <= 30){lampAPWM = 3;}else if (lightValue > 30 && lightValue <= 60){lampAPWM = 2;}else if (lightValue > 60){lampAPWM = 1;}}void Alarm(void)
{if (alarmDelay > 0) //蜂鸣器响{alarmDelay--;BUZZER = 0;}else{BUZZER = 1;}
}void Timer0_Init(void)
{TMOD &= 0xF0;TMOD |= 0x01;TL0 = 0x33;		//设置定时初值TH0 = 0xFE;		//设置定时初值 500usTR0 = 1; //启动T0计时ET0 = 1; //打开T0中断EA = 1;  //打开总中断
}void Timer0_Intterupt(void) interrupt 1
{static unsigned char ACount = 0;static unsigned int cnt;TL0 = 0x33;		//设置定时初值TH0 = 0xFE;		//设置定时初值 500uscnt++;if (cnt >= 500) //250ms刷新一次状态{cnt = 0;dispFlag = 1;}ACount++;if (ACount <= lampAPWM) //占空比调节{LAMPA = LAMP_ON;}else if ((ACount > lampAPWM) && (ACount <= 3)){LAMPA = LAMP_OFF;}else{ACount = 0;}}/************************* 串口配置 *************************/
void UART_Init(void)
{SCON = 0x50;TH2 = 0xFF;TL2 = 0xDB;RCAP2H = 0xFF;  //(65536-(FOSC/32/BAUD))   BAUD = 9600 FOSC = 11059200RCAP2L = 0xDB;/*****************/TCLK = 1;RCLK = 1;C_T2 = 0;EXEN2 = 0;/*****************/TR2 = 1;ES   = 0; //打开串口中断EA   = 1; //打开总中断}/************************* 串口发送字节 *************************/
void UART_SendByte(unsigned char dat) //串口发送单字节数据
{unsigned char time_out;time_out = 0;SBUF = dat;						  //将数据放入SBUF中while ((!TI) && (time_out < 100)) //检测是否发送出去{time_out++;DelayUs10x(2);}		//未发送出去 进行短暂延时TI = 0; //清除ti标志
}/************************* 串口发送字符串 *************************/
void UART_SendStr(unsigned char *s, unsigned char length)
{unsigned char num;num = 0x00;while (num < length) //发送长度对比{UART_SendByte(*s); //放松单字节数据s++;			  //指针++num++;			  //下一个++}
}

仿真演示视频：
https://www.bilibili.com/video/BV1gZ4y1h7Yx/

实物演示视频：
https://www.bilibili.com/video/BV13Y4y167WM/